U.S. Sen. Bob Casey, a Democrat, is asking the FCC to look into why a 911 call Timothy Davison made Jan. 4 while he was being chased along I-81 was reportedly dropped.

A Pennsylvania senator is asking the Federal Communications Commission to investigate a dropped 911 call made by a Maine man shot to death in what's being called a road rage incident.

U.S. Sen. Bob Casey, a Democrat, is asking the FCC to look into why a 911 call Timothy Davison made Jan. 4 while he was being chased along I-81 was reportedly dropped.

"As the investigation moves forward it's important to understand why the victim's call was dropped and what can be done to improve cell service in rural areas," Casey says in a statement.

Davison, 28, of Poland, Maine, had called 911 multiple times to report that he was being chased and shot at as he drove from Maryland into Pennsylvania. The chase ended when the unknown assailant rammed Davison's vehicle off the road and shot him to death.

The shooting remains under investigation, but authorities have ruled out any links to the incident and other road rage shootings in Pennsylania and Kentucky.